Combined feed-water heater and weir-meter.



Patented Nov. 2, 1915.

m- W N m. MW mmmw 1 m n T I' MW In HM m M 1 1 NW M mm m i ilLl I IJ' D. R. YARNALL. m COMBINED FEED WATER HEATER AND WEIR METER.

APPLICATION FILED AUG- 7' 1911-,

WIT sssEs-fzz 9 6 UNITED strAT s PATENT- oFFICE.

mvmfa. YABNAYLLI', or PI-I1LADELPI-IIA, PENNSYLVANIA, AssIGNoR ro SEABN LL- WARING COMPANY, 03 PHILADELPHIA, PENNSYLVANIA, A conroran'rion or PENNSYLVANIA,

To all whom it may concern Be it known that I, DAVID Philadelphia, county of Philadelphia, State of-Pennsylvania,'have .inventeda new and useful Combined specification. I p v "The-mam purpose of"-my-1nvent10n s the combination ofaweir fluid measuring ap'- paratus with a feed water-heater,- prefer ably, but not-necessarily, of open type,'an d, most desirably, without interference with. the. structure -or effective operation of the heater.

Afurther purpose of my invention is to] maintain'the same pressure'and temperature conditions in the .notch tank as in theheater, in order that any back pressure found de-' sirable in the heater to accommodate feed water temperatures above normal vaporiza- -tion may not be disturbed by, nor interfere with the measuring mechanism, and that the pump may receive the feed water at substantially the same excess pressure notwithstanding thelnterm'ediate weir measurement;

f A further purpose of my invention isto insert a weir measuring mechanism, under :back pressure or not asdesired, between a pump and a feed water heater, preferably using it as an equalization pool and in combination with checking mechanism agains excessive filling of the notch tank.

. practical,

control the quantity of feed water heater gravitydischarge in proportion to the rate of pump. withdrawal of such water from a weir meter catch basin. I V I have preferred to illustrate my invention by one form thereof which has proved inexpensive and efiicient, while recognizing that the principles involved might appear in various other physical embodiments.- ,1 have illustrated the tank for the weir meter as separate from the water 4 heater-instead of built into the heater chiefly because of my desire to apply it to existing heaters'as well as new ones without necessitv for change i-n-the heater.

Figurel is a vertical longitudinal sectlon, partly in elevation. of the preferred embodiment of my invention. Fig. 2 is a section,

Specification ofletters Patent.

Feed-\Vater Heater and lVeir-Meter, of which the following is a' A further purpose of my invention is to coMBInEn FEED-WATER HEATER Ann WE IEMETER.

Patent ed Nov. 2, 1 915.

- Application fi1ed 'August'7,1911. ,Seria1N o.64 2,753.

' I looking in the direction of the arrows,taken V s R. YARNALL, a citizen of. the United States, residmg at upon the line of Fig. 1.. Fig. 3 is abroken section, taken in the direction of the arrows, upon line 3.3 ofFig. 1.

In the" draw1n'gs,s1m 1lar numerals refer to like parts.-

vIn my-illustration of the feedwater heater claim to having invented anything. in the 5 heater per se and recognizing that my invention is applicable to many, if not all of the. -forms; f e t r heater upon the market,

Inthe fee-abody of tlieheater. within which are shown water heater selected, 45 is the cleaningaccessduorsfi, (Sand 7. Steam, or

dinarily exhaust, is supplied through "the. pipe Sand excess water is removed fromv it by the separator 9.- The-make up water is 1 supplied through pipe 10., in which a valve I 11 is controlled-by means of leversf12, 13,

and'link 14, so as to contr'ol'the Water inlet. by'the'height of the water within the heater, I

through float or othermeans as desired.

- The heater is further protected against flooding by overflow '15 to anyzsuitable' receptacle ',not shown; A. vacuum breaking devicefi which may be employed if desired, is

indicated at 16.

The heater is provided with a so-called free or atmospheric exhaust 17 which, however, as is well known, is'frequently Weighted:

to permit or provide for. pressure within the intended to deliver. Sofar, as hereinbefore',

' heater corre'sponding'to the maximtrmrtemdescribed, the heater differs in no particu lars from existingheaters and the structure indicated need not be changed' in any way for the accommodation of my invention.

' Jlhe hot water outlet. pipe 18 is in the samev location as is usual for this pipe but instead -of=being connected 'directly'to the discharge pump 19, asis normally the case, this pipe 7 enters at any point 20 into tank 21. This tank 'is fluid tight and is preferably connected with the heater is'such away as to maintain the same pressures in both so as not to lose the advantages of any -temperatures above that 'of. normal vaporization which may be attairiedlwithin the heater."

rerimmej height. Beoeuseor, this .conven lance ef'meehemeel corrnechdns l have eexlectedi the penal; 20 an; rheeatch besm end. or

ehe' r'enlr 21, eefiefer enough remete from the Weir eherem eo'evold undue fiuctuatlenof the fleet by. reason of. the Water flow." 7 he] stem 28 ieen'neoemg iglrefieet and valve is] guided many-suitable bushing 29; Within the reel: 21, I provide the Weir meter to Whese eate -mm reference has elre'erly been made; -W1t arr-em.) meter-Z1 lem the perm-- tion 30 'eerryiisgweir beille. plate-V32 fleet casiri33, mces'irig' ewe, alierrrmzr3e; fleet .35 egd other elementslmrelnefier set out The Qur'poseeffthe befile pleieSZ as re,

Weir be e ples'eeas when the Waler level hence, temperature Conditions in -the in Y else in eomleelion with any other'sati'sfae teryweeorder eellbraied' megreemerit with.

We eonstruetlonusecl.

The. reeorder illustrated is boxed et 4-5 and is hushed era-l6 tevp ermlt the requisite movement-er sieme'l permeated with vfire float. The stem 4:? 1s extended at 48. be-

low the flora: to provfle for adjustable some rerweigllt e 9, preferably in the form of all les reiained by the nut 50, so that the float 35' may lee immersed to its point of most emifive fieteiien. ees upper end the stem 47 is connected; with a rack 51 rote a gear 52 e-11. piral ectuering cylinder 23 by Wlllfill e11 '54; carrying recording pen fifi is moved'over the chart surface of drum 5% to mrllcete quantities 1n ordinates and time as 5.7 .inalieeteseheheight roughly on scale 58: The recording chertisplecedupon a properly ecfiuetecl'rlrumfiG.

in opereiien, file hot wsterheateris. opere secl wlfiliout modification. The equalizing pipe mainteins the seine pr esure and,

exist in'the heaien The flow eif Water .21 the heater to the'i-enk, through. the pip 1837 1s therefore that. clue fie the difier giroteet; the liedy lei warerfifi between it ence in heads alor e and the flow continues end- Weir, from amine :list'erhences, from warez? inlet,- preeser e and variation of gaseous flow ,izhrougli the Type so that the wen shell measure eke actual flow eseccuretely as possible; in furtherance of this purhereshown es'mounteil upon baffle plate 32 1 so that the painter may be set at the exact height of the welr botfiom, I: also prevlcle an inspection opening. closed by plate s0 that the recorder may be eer, at tlre z-ero point when the. later level is accurately jusiecl to zero by esslstenee or the pomter.

In orcler-te keep the Weizer Within the fleet 5. I

chamber 5% as iree from fiueuatlen as pas sible I admit Werer therete from the main body 36 by means oif-e pipe 4C2 having screened'outlet 413 anal controlled by valve 44% "Ellis particular ngerrrent of pares Tmey be verieclenrl my inventionisinctly contemplates the 'use, of other fleet actuated weir meter. the relations rlescrilwerl and; eleilrled herein. This specific illustreiien is made in respense to. the requirements fillet 1 illustrate enrl rle'seribe the beseferm lmewn as me of practising my; invention. Fer ihe same rea'sonl have shown the float com neared with the form of reeorrler illustrated though "A" recognize that i; would be useful ilie pum suction .fleetfor the elosure should be sufllcienfily ,low permit outflow of all of the weter in i he mein tank above the lowest notch level Wllillfilli; flooding; end this subsequent flow will be properly measured. The float Wlll ill 11 reach its zero point excl Water measure re re will slop lit will be seen that hile the'sllut-ofi of Water flow from the heater is not necessarilyeoilicident with the stoppage ofhe pump as would be the ease with the existing" direct cennection betweenthe pump and the heater they are directly dependent, the see upon the other differing only in time eml rapidity of action.

The inrlireeb character of the control. 0f

hot water withlrewal by pump aetlon is of? 'a'elveneegem sever-gal ays, it acts as-a demper bet'ireen' the pump and the reed Water heel-er, relieving the leeter from the seal- (ienness of stoppage orfiow which lmgrrh otherwise occur wi h sudden stelnpage er the abscissee" in m usual manner, end pointer 7 above the pump slroulel be snfl'lcient'to pre P1551 renders the flow continuous instea v,jof intermittent, 1n the case of an mtermittent pump, afi'ording a pool between,

This provides a constant sup'plv of water upon the restarting'of thepump as distinguished from the uncertain quantity of water in the feed water heater where this pool is not interposed. Furthermore, the reservoir of Water in the catch-basin is both larger than and additional to the reservoir of water normally available in the Water therefrom, in order thatthe discharge flow may be due-to gravity alone and the heater heater.

It will be seen that my invention equalizes the pressure in a feed water-heater and in a fluid-tight tank-receiving the discharge pressure may be maintained; and that it measures the water passing .therebetween by recording or integrating weir methods, withdrawing-the water from the Weir catch-basin a pump under no less favorable conditions than those under, which the pump "would ordinarily withdraw water from the heater itself while gaining the advantage "o f the intermediate pool and protecting the' weir mechanism against flooding.

What I claim as new and desire to protect liy Letters Patent isg l. n a device of the character stated, an open feed water heater having a water storage reservoir in the lower part thereof, a

fluid-tight tankconnected therewith, a valve in the connection, a pressure connection between the-tank and the heater above the water reservoir of the heater, a weir meter chamber and catch basin within the tank, a float in the catch basin and connections between the float and valve bontrolling the flow-oi water from the heater reservoir into the-tank Q; In a device of the character stated, a

' closed meter casing including a weir chamher and a catch basm', a source of irregular in the level of said pool for regulating the valve to vary flow of the supply water to the weir chamber in proportion to the height of water in the pool thus formed.

Copies of this patent may be obtained for five cents each, by addressing the 9 In a device of the character stated, a weir meter comprising a fluid-tight tank having a receiving chamber and a catch' basin, a compartment vforming the main source of supply of water for the meter 'receiving chamber, a gravity water connection between the compartmentand the receiving chamber of the meter, a pressure equalizing connection between the compartment. and the meter,the catch basin of the meter havmg an outlet, a valve controlling the flow of Water in the gravity water connection, a

float in the catch basin of the meter and con nections between the float and valve to directlycontrol the quantity of water admit'e ted to the receiving chamber of the meter by the height of water in the meter catch basin.

4. In a device of the character stated, a feed water heater, a fluid-tight tank containing a weir chamber and a catch basin, a

water flow connection between the heater; 1

and the weir chamber, a valve in the water flow connection, a float in the catchbasin,

connections between the valve and float controlling the flow of water from the heater into the tank and a second connection between the heater and the tank entering the heaterabove the water level therein.

5. In a device of the character stated, a feed water heater adapted to contain a pool of water in the bottom thereof to act as a reservoir, a steam inlet for the heater, a. weir meter comprising a weir chamber and a catch basin, a water connection between the reservoir in the bottom of the heater and the weir chamber, a valve in the water connection, a float in the catch basin, connections between the valve and float closing the valve as water rises in the catch basin and an outlet for the catch basin.

6. 'In a device of the character stated, a

feed water heater having a reservoir in the bottom thereof, a weir meter having a weir chamber and catch basin reservoir therein, an outlet for the catch basin, a gravity water connection between the heater reservoir and weir chamber, a valve in the connection and a float in the catch basin reservoir connected with the valve to open the valve and draw open the heater reservoir as the catch basin reservoir water level is lowered.

DAVID R. YARNALL. lVitnesses EMMA K. SHELLY, YVILLIAM STEELL JACKSON.

Washington, D. 0.

Commissioner of Patents, 

